Contact lens with surface modification and the method for its preparation
US11034107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2018 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/049
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A surface-modified contact lens, having a surface contact angle hysteresis of less than 15°, includes a lens body and a first surface modification layer disposed on a surface of the lens body. The first surface modification layer comprises a first reactive hydrophilic polymer. The surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group. A first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer. The first covalent cross-link bond is formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.